31231472734355 has 16 divisors (see below), whose sum is σ = 39510402813504. Its totient is φ = 23652486021120.

The previous prime is 31231472734331. The next prime is 31231472734373. The reversal of 31231472734355 is 55343727413213.

It is a happy number.

It is not a de Polignac number, because 31231472734355 - 2¹² = 31231472730259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1399875566 + ... + 1399897875.

It is an arithmetic number, because the mean of its divisors is an integer number (2469400175844).

Almost surely, 2^{31231472734355} is an apocalyptic number.

31231472734355 is a deficient number, since it is larger than the sum of its proper divisors (8278930079149).

31231472734355 is a wasteful number, since it uses less digits than its factorization.

31231472734355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799773566.

The product of its digits is 6350400, while the sum is 50.

The spelling of 31231472734355 in words is "thirty-one trillion, two hundred thirty-one billion, four hundred seventy-two million, seven hundred thirty-four thousand, three hundred fifty-five".